Things you can do with a fist.
Yesterday, in my posting “Two cartoons from friends”, significant uncertainty about whether the verb to fist in the second cartoon was intended merely as a contact-action verb (roughly, ‘to punch’) or as a reference to a sexual practice. Right after that, friends posted photos of this t-shirt, on sale (in a range of sizes, from infants’ on up) in Walmart:
(#1) The fisting love t-shirt, available from many sources on amazon.com and elsewhere
Apparently intended as a joke, but possibly understood by some as an innocent reference to fist-bumping.